1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc68078215f792750fd8ac5bad08fa3e222a4950784db17f17a2e843932417d83. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/34e3549f-c53b-4462-92c9-b00ba1a84369.json and https://artists.proofprofile.net/proofs/artist/34e3549f-c53b-4462-92c9-b00ba1a84369.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb17bc8696ea7c118a5b5f13e9776a20cbecf87f7482011497d0c82111d0eed99. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUYG1541487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1168440cc8ac610930229b4c5b30d502ac57cbe83f9cb925fe7dc4b47c23862. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTB52348462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7025b5a9860151de4e9f0bedb4decd3cdacdbf081d8e69ff501e1782f39ff322. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFG2488827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d719113260f421bb528721034f1fc11511559b2c6ca547e8b8f5375bfa04e8f. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTAW2484871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf58db0088ac8ea129a03c4fcf3ca1ca90713e0bebadb0f3eeeb3ecb7c01b0b7a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWX2467671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2e6e1077b627a13818686a4f63ca50c9646566594c645dd8190a03eca9f9bd4. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMEP2401505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b5d038cbd8af69685570dc23f7a2b0a2261dc9e638dfcf6de5c600d4429c24c. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6P2489882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8ce61a94846b0cd01ddb07f2cebabd6ce68c0a9fc6e866c61d7c7ecaf391cde. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN42474428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07109502016c0cd469254bff384f47766c765b1eed0ae0c37e594b301ccd73e1. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFS2321045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07109502016c0cd469254bff384f47766c765b1eed0ae0c37e594b301ccd73e1. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFS2321045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbd4178c7fdf1f7a822cc26637b98b70939d83e0fb07790713d747172de37dcf. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UKZGC2304923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d727526d26fbb12a4697f38c3df0cca3cf6756f6df35d8e09eec0ea733b09f6. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWS2339680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20184843c9f81a56c41587e0d0ccb537a3750f39714e9cc59c6fda96ee690de2. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6J2213101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cc18d41f51167d32bf89f399848cb797d419436ff687eb72803ba274aa6a58d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWS2124083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc3f90313b6f60731f01f41a80c6454a5c50f449eeedd363d8ed9b0df29d6b92. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES82160104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9171133175320bbf0def297a5c9f9f86c9c7c642b252367475d949f1b9d222d5. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFZ42193115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7fd17289adf3e2acaa107bd6e00d6263f5f01cd200822cdfc2aa27b7d434368. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN52097501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8522dbddb0fbcadad193b09d517858a39a2bcc672746b57856af7bbce04b2d93. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFYY2090947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8db470dc5b73880848d6b9508fbb47e87065c3049b8f0852058152a6db5a8d8. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN41969705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc07f4559dfb691d51076fdd4be6e879ad08028c208dabc6fd58779798d160e61. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFZ31918457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70538ab66abe9465fd97d6ddff9e6b8a7367d3f0fd391fd00d5c56fdfd525df2. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHNA2035097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb33dca03fabc92456e31e8664cc35b2c37a0879e6c8238a4db8b56986d473117. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USL4R2157008.